S
M
T
W
T
F
S
30
68°
49°
31
69°
51°
1
70°
56°
2
72°
58°
3
70°
59°
4
78°
57°
5
80°
54°
6
74°
50°
7
69°
47°
8
69°
51°
9
73°
48°
10
73°
52°
11
72°
51°
12
69°
53°
13
71°
55°
14
76°
53°
15
74°
51°
16
66°
52°
17
65°
53°
18
67°
51°
19
71°
48°
20
65°
51°
21
69°
42°
22
65°
41°
23
63°
41°
24
63°
42°
25
65°
42°
26
63°
41°
27
61°
46°
28
62°
43°
29
60°
39°
30
60°
46°
1
61°
41°
2
68°
39°
3
60°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Henderson
Henderson's September 2026 forecast shows daily high temperatures ranging from 60° to 80°, with overnight lows between 37° and 59°. The average high for September is 68° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Henderson. See also: October | November | December.